Extrusion of Femtosecond Laser-Implanted Intrastromal Corneal Ring Segments in Keratoconic Eyes: Prevalence, Risk Factors, and Clinical Outcomes

Figure 1

(a) Keratometry map before Keraring extrusion; the arrows pointing to the steepening correspond to the Kerarings. (b) Keratometry map after ring extrusion; the arrows pointing to the flattening correspond to the extruded rings. (c) Scheimpflug densitometry of implanted Kerarings. (d) Scheimpflug densitometry showing the scar at the site of extruded Keraring.

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